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194results about How to "Reduce projected area" patented technology

Aerial vehicle

InactiveUS20170174336A1Projection area decreaseDecrease spacingUnmanned aerial vehiclesRemote controlled aircraftFlight vehiclePropeller
An aerial vehicle is provided which includes first thrusters with first propellers and second thrusters with second propellers. Each of the first propellers has a first rotating region in which blades thereof rotate. Similarly, each of the second propellers has a second rotating region in which blades thereof rotate. Each of the first rotating regions is located to overlap one of the second rotating regions, as viewed in a direction of a yaw axis of the aerial vehicle. The first rotating regions are located away from the second rotating regions in the direction of the yaw axis. Such layout of the first and second propellers eliminates physical interference therebetween. The overlap between the first and second propellers results in a decreased cross-sectional area of projection of the aerial vehicle from the front view in a flight direction thereof.
Owner:NIPPON SOKEN +1

Membrane filtration assembly

The invention relates to a membrane filtration assembly, in particular to a nanofiltration or reverse osmosis membrance filtering assembly in the water treatment field. The invention discloses the membrane filtration assembly high in filtering efficiency in order to overcome the defect that an existing membrane filtration assembly is low in filtering efficiency. The assembly comprises a shell, a mandrel, a filtering structure, an upper cover assembly and a lower cover assembly. The upper cover assembly is arranged at the upper end of the mandrel, the lower cover assembly is disposed at the lower end of the mandrel, the mandrel is sleeved with the filtering structure, the filtering structure is axially pressed between the upper cover assembly and the lower cover assembly through a fastening structure, and the shell is arranged outside the filtering structure and connected with the upper cover assembly and the lower cover assembly. The filtering stricture comprises a plurality of flow guide discs and membranes, the flow guide discs and the membranes are sequentially sleeved with the mandrel in the axial direction of the mandrel. Each membrane is installed between every two adjacent flow guide discs. By selecting and combining some key parameters of the membranes through the membrane filtering assembly, filtering efficiency of the membrane filtering assembly can be higher, and the filtering rejection rate is unexpectedly good.
Owner:CHENGDU MEIFUTE MEMBRANE TECHNOLOGY CO LTD

Display panel and display device

ActiveCN108598136AIncrease the effective light transmission areaReduce projected areaSolid-state devicesPrint image acquisitionLight sensingTransmittance
The embodiment of the invention provides an organic light emitting display panel and a display device. By means of distributed arrangement of supporting units in the display panel and the position adjustment of an opening area of a light emitting unit, on one hand, in the embodiment of the invention, an edge corner area of the supporting unit is close to the opening area of the light emitting unitas much as possible by reducing a relative side length of the supporting unit and the opening area of the light emitting unit, so that the distance between the supporting unit and the opening area ofthe light emitting unit is increased, as a result, the projection area of the supporting unit in the opening area of the light emitting unit is decreased, in this way, when the supporting unit generates deformation and even collapse due to an external pressure, the damage to the opening area of the light emitting unit is reduced. On the other hand, in the embodiment of the invention, by means ofthe distributed arrangement of the supporting units and the position adjustment, the supporting units are arranged in a non-transparent area as much as possible, thus increasing an effective light transmission area on the display panel, and in this way, the overall light transmittance is greatly improved, and the sensitivity of light sensing fingerprint recognition is improved.
Owner:WUHAN TIANMA MICRO ELECTRONICS CO LTD

Catheter kit for burrow

Disclosed is a catheter tool for fistula with excellent operability including a catheter and a sealing device. The catheter has a flexible tube and an indwelling part in the body. The flexible tube extends along the wall of the fistula hole. A nutrition passage is provided inside the fistula hole to introduce nutrition or medicinal liquid into the stomach. The indwelling part in the body is attached to the soft tube. The protruding shape of the front end of the tube is a non-balloon indwelling part in the stomach in the body buried state while shrinking from the protruding state due to the external force caused by the sealing device. The sealing device is pulled out A sealing device that may be matched to the aforementioned catheter, which has a guide wire passage and an operation part, the guide wire passage is used to insert the guide wire attached from the front end to the middle of the guide wire, and the operation part is used to insert the guide wire attached to the rear end of the guide wire passage. The indwelling part in the body transmits the external force, and the rear end part of the guide wire channel and the operation part are arranged in a separated state.
Owner:SUMITOMO BAKELITE CO LTD +1

High capacity sector mount

An antenna mount includes first and second tower mounting brackets. A first frame has first and second portions attached to the first and second tower mounting brackets, respectively. A second frame has third and fourth portions attached to the first and second tower mounting brackets, respectively. First and second equipment brackets are attached to the first frame, and third and fourth equipment brackets are attached to the second frame. Optionally, the first and second frames may each be formed as a one-piece continuous bent tube. Optionally, the first portion and the third portion are located side-by-side and clamped to the first tower bracket by a same first clamp, and the second portion and the fourth portion are located side-by-side and clamped to the second tower bracket by a same second clamp. Optionally, each equipment bracket has a frame face and an equipment face, wherein the frame face is orthogonal to the equipment face and extends in a direction which intersects a plane containing the equipment face at an angle of approximately 10 to 80 degrees.
Owner:COMMSCOPE TECH LLC

Layout and control method of tilting rotor-wing vertical take-off and landing aircraft

The invention relates to a layout and control method of a tilting rotor-wing vertical take-off and landing aircraft. Tandem wing layout is adopted; the wing tips of two sides of front wings and rear wings are each provided with one set of rotor wings, and altogether, four sets of rotor wings are adopted, so that a power system can be formed; the wings and the rotor wings can rotate around rotatingshafts penetrating through the interiors of the wings within a certain angle range, so that the respective tilting of the rotor wings and the wings is achieved. According to the control method, the vertical take-off and landing and high-speed level flight of the aircraft can be achieved; the angles of the rotor wings and the wings can be properly adjusted in all stages of flight, and the overallefficiency of the aircraft is optimized; the rotor wings and the wings can tilt respectively, resistance is small in vertical take-off and landing stages, and airflow interference between the rotor wings and the wings is small; when the aircraft is switched between a vertical take-off mode and a landing mode, the utilization efficiency of the wings is high, the burden of the power system is low; and flight control over a whole flight process is simple. The vertical take-off and landing aircraft has a wide application prospect.
Owner:BEIHANG UNIV

High-temperature alloy disc die forging method

The invention belongs to the technical field of high-temperature alloy die forging, and particularly relates to a high-temperature alloy turbine disc forge piece organization and performance thermal machining method. A performing die forging plus bearizing plus die forging method includes the steps that the specification and size of the wild shape required by finish forging are determined, a finish forging die and a performing die forging die are prepared, performing die forging is conducted, bearizing is conducted till the wild shape required by the finish forging is formed, and the finish forging is conducted; an annular blank is determined according to the forge piece shape to serve as the wild shape; first-fire forging of a titanium alloy bar is forged through the performing die, and the heating number integrates traditional upsetting, punching and saddling processes; preformed forge piece core materials generated after forming die forging is conducted are removed; bearizing is conducted on a performing forge piece till the wild shape size required by finish forging is formed; one-fire finish forging is conducted till forming is finished. According to the method, the problems that the final forge piece of the high-temperature alloy turbine disc forge piece is uneven in organization and residual stress due to the blank making process of more heating numbers and smaller deformation are avoided.
Owner:SHAANXI HONGYUAN AVIATION FORGING

Power generation unit of integrated gearbox design for aircraft engine

ActiveUS20150311770A1Undesirable increase of be suppressReduce vibrationEngine fuctionsGas turbine plantsAirplaneMagnet
A power generation unit is connected with an engine rotary shaft via an accessory gearbox. A rotor extends through the accessory gearbox and a drive gear is disposed at an intermediate portion of the rotor for driving the latter. Permanent magnet elements are mounted on opposite side portions with the intermediate portion intervening therebetween, and stator coils are disposed so as to confront respective outer peripheries of the permanent magnet elements.
Owner:KAWASAKI HEAVY IND LTD

Inverter device and drive unit using the same

The invention provides an inverter device and a drive unit using the same. In two systems of three-phase alternating-current inverter devices that drive a motor, power elements on power supply sides of bridge circuits are mounted on unit bases to constitute upper arm units. Power elements on ground sides of the bridge circuits are mounted on unit bases to constitute lower arm units. The upper arm units and the lower arm units are arranged separately on upper surfaces and outside surfaces of heat dissipation blocks of a heat sink. Heats generated by the power elements do not interfere with each other and are emitted to the heat sink, whereby heat dissipation performance of the power elements constituting the bridge circuits is improved.
Owner:DENSO CORP

Printed circuit board, manufacturing method thereof and electronic equipment

InactiveCN110149762AAvoid warpingAvoid the consequences of electrical connection failuresPrinted circuit assemblingPrinted circuits structural associationsSurface mountingEngineering
The embodiment of the invention provides a printed circuit board, a manufacturing method thereof and electronic equipment. The printed circuit board comprises a first printed circuit board. The firstprinted circuit board comprises a first surface and a second surface, and the first surface and the second surface are opposite in direction. The first printed circuit board is provided with a first groove, and an opening of the first groove faces the first surface. The first surface is provided with a first bonding pad. An electronic element is mounted on the second surface. The printed circuit board also comprises a second printed circuit board which comprises a third surface and a fourth surface, and the third surface and the fourth surface are opposite in direction. The third surface is provided with a second bonding pad, and the second bonding pad corresponds to the first bonding pad in position. The third surface and the fourth surface are respectively provided with electronic elements. The first printed circuit board and the second printed circuit board are welded through the first bonding pad and the second bonding pad to form a stacked structure. The printed circuit board provided by the invention is not likely to warp, has stronger stress deformation resistance, and can prolong the service life of electronic equipment.
Owner:HUAWEI TECH CO LTD

Projective lighting device and film component used therein

The present invention relates to a projection type lighting device and film component used therein. The device can easily form a clear silhouette having a distinct contour at the projected position by a lighted electric bulb. The present invention has a mask part 30, wherein a pattern with a inlay edge shape is composed by said Q2 part formed around inner surface patterns Q1 of the light transmission openings 32, simultantly the non-perspective display part Q2 is located at the inside circumference of the light transmission openings 32, and a film pressing means P is used to maintain a film member 33 at a light shielding plate 31 to the central part of the light transmission openings 32. The mask part 30 is detachably mounted to the front part of a hood casing part 20 formed on the lighting device main body 10. A cylindrical lens holder is mounted to the hood casing part 20 in a state of covering the whole part of the mask part. The film member 33 can be projected on a subscribed projection position by the light irradiated from the backside of the lighting device main body.
Owner:HALU

Multi-layer lattice precipitation separating device for V-shaped pipe

InactiveCN102553309AImprove sedimentation efficiencySimplify construction and construction difficultySedimentation settling tanksEngineeringPrecipitation
The invention discloses a multi-layer lattice precipitation separating device for a V-shaped pipe. The device is characterized by comprising multiple groups of parallel vertical plates, each group of parallel vertical plates is formed by a left vertical plate and a right vertical plate, a plurality of oblique clapboards are arranged between the left and right vertical plates, the left and right vertical plates and two adjacent clapboards form a water passage with a parallelogram-shaped cross section, a mud discharge hole is formed above the intersected part of the right vertical plate and the clapboard, a mud discharge passage is arranged between each right vertical plate and clapboards in another group of adjacent parallel vertical plates, and two ends of the mud discharge passage are sealed to form a static liquid area. As the vertical plates are adopted in the invention, the precipitation efficiency is improved, and simultaneously the vertical plates are more convenient to construct.
Owner:厦门飞华环保有限公司

Novel vortex generator for wind turbine blade

The invention discloses a novel vortex generator for a wind turbine blade. The vortex generator comprises a fin body, wherein the fin body is of a back fin structure and is symmetrical relative to thelongitudinal cross section of the fin body; the middle longitudinal section is parallel to the flow direction from the leading edge to the trailing edge of the airfoil section of the wind turbine blade, so that the projection area of the fin body in the direction perpendicular to the flowing direction is reduced, and then the shape resistance is reduced. According to the vortex generator, the bionic design is adopted, and the back fin-shaped fin body has relatively small flow resistance. The middle longitudinal section of the back fin is parallel to the flow direction from the leading edge tothe trailing edge of the airfoil section of the wind turbine blade, compared with the prior art, the fin body has the advantages that the projection area is small in the direction perpendicular to the flow direction of the airflow, and the shape resistance is small. When the airflow flows through a groove, a high-energy flow direction vortex can be induced at the groove and at the edge of the groove, so that the energy in the boundary layer can be increased, and the flow separation is inhibited.
Owner:SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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